(19)

(11)

EP 2 149 249 A1

(12)

(43) Date of publication: 03.02.2010 Bulletin 2010/05 (21) Application number: 08745258.7 (22) Date of filing: 07.04.2008

(51) International Patent Classification (IPC):  H04M 1/64(2006.01) (86) International application number: PCT/US2008/059597 (87) International publication number: WO 2008/130834 (30.10.2008 Gazette 2008/44)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 20.04.2007 US 788550 (71) Applicant: Microsoft Corporation Redmond, WA 98052-6399 (US)	(72) Inventor: DIDCOCK, Clifford N. Redmond, Washington 98052-6399 (US) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät  Leopoldstrasse 4 80802 München 80802 München (DE)